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Finding the Fourth Proportional to 15,107.53, 20,848.08 and 8,392.84

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Solution

The fourth proportional to 15,107.53, 20,848.08 and 8,392.84 is: 11,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.53 : 20,848.08 = 8,392.84 : x
  2. Step 2: Convert to fraction form
    15,107.53/20,848.08 = 8,392.84/x
  3. Step 3: Cross multiply
    15,107.53x = 20,848.08 × 8,392.84
  4. Step 4: Simplify right side
    15,107.53x = 174,974,599.75
  5. Step 5: Solve for x
    x = 174,974,599.75/15,107.53
  6. Step 6: Final answer
    x = 11,581.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.